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Updated: Jul 8, 2025

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A Low-Cost, High-Fidelity Simulator for Transabdominal Chorionic Villus Sampling.

Megan G Lord1, Matthew A Esposito1, Alexis C Gimovsky1

  • 1Division of Maternal Fetal Medicine, Women & Infants Hospital of Rhode Island, Alpert Medical School of Brown University, Providence, Rhode Island, USA.

Fetal Diagnosis and Therapy
|December 11, 2023
PubMed
Summary

A new, low-cost simulator for trans-abdominal chorionic villus sampling (TA-CVS) has been developed. This reusable model provides realistic training for clinicians, improving skills for first-trimester genetic diagnosis.

Keywords:
Chorionic villus samplingSimulationTransabdominal chorionic villus sampling

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Area of Science:

  • Medical Simulation
  • Maternal-Fetal Medicine
  • Medical Education

Background:

  • Chorionic villus sampling (CVS) is crucial for first-trimester genetic diagnosis.
  • Limited clinical cases hinder training for new clinicians in CVS techniques.
  • Existing simulation models are costly, require specialized materials, and are not reusable.

Purpose of the Study:

  • To develop and evaluate a low-cost, reusable simulator for trans-abdominal CVS (TA-CVS) training.
  • To assess the fidelity and utility of the simulator for maternal-fetal medicine fellows.

Main Methods:

  • Construction of a TA-CVS simulator using inexpensive, readily available materials.
  • Evaluation of the simulator by attending physicians for visual and tactile accuracy.
  • Integration of the simulator into the fellowship curriculum for hands-on training.

Main Results:

  • The simulator is constructed for under $10 and can be refrigerated for repeated use.
  • Attending physicians found the model to be an accurate visual and tactile simulation.
  • Two fellows achieved competency on the simulator and began supervised clinical CVS procedures.
  • The simulator has been reused for 3 months with dozens of procedures without degradation.

Conclusions:

  • A low-cost, easily constructed, and durable high-fidelity simulator for TA-CVS has been developed.
  • The simulator serves as a valuable tool for repeated practice, enhancing clinical skills.
  • This model facilitates effective training for maternal-fetal medicine fellows in CVS techniques.